کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5439225 1398192 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optical temperature sensing properties of Er3+, Yb3+ co-doped NaGd(MoO4)2 phosphor
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Optical temperature sensing properties of Er3+, Yb3+ co-doped NaGd(MoO4)2 phosphor
چکیده انگلیسی
Er3+, Yb3+ co-doped NaGd(MoO4)2 phosphors by using sodium citrate as chelating agent were synthesized by hydrothermal method. The structure and morphology were characterized by means of X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). The temperature-dependent up-conversion spectra of Er3+, Yb3+ co-doped NaGd(MoO4)2 phosphor under the excitation of 980 nm laser with different ratios of Cit3−/Re3+ has been measured. It was found that the Cit3−/Re3+ ratio considerably influenced the sample's morphology. The temperature sensing performance for the samples with various morphologies was studied based on the change of emission intensities from two thermally coupled 2H11/2 and 4S3/2 levels of Er3+. It was found that the temperature sensitivity can up to a relative high value of 0.0161 K−1, which was obtained for the sample with the ratio of Cit3−/Re3+ was 0.5. Finally, physical mechanism of morphology-dependent temperature sensing sensitivity was explained and predicted.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 1, Part B, January 2017, Pages 1460-1465
نویسندگان
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